Type-writing machine.



v c. B. YAW. TYPE WRITING MACHINE.

APPLICATION FILED AUG.2I, 1912.

T E E H A s T E E H S 2 III;

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INVENTEIR= 241 0% i mm EN HIEATTUR NEY C. B. YAW.

TYPE WRITING MACHINE. APPLICATION nuzo AUG-2h 1912.

Patented Jan. 9, 1917.

2 SHEETSSHEET 2- HISATTURNEY FEED STA GLIO B. YAWV, F ARLINGTON,

REMINGTON TYPEWRITER NEW YORK.

ES PATENT @FFlifiE.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented J an. 9, 1217.

Application filed August 21, 1912. Serial No. 716,147.

To all whom it may concern:

Be it known that 1, C110 B. YAW, citizen of the United States, and resident of Arlington, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in lype-VVriting Machines, of which the following is a specification.

My present invention relates to means for turning the platen of a typewriting machine either backward or forward at will through a predetermined fractional line space distance so that characters may be printed both above and below the normal line of writing.

The main object of the invention is to provide improved means for the purpose specified.

To the above and other ends my invention consists in the features of construction, combinations of devices and arrangements of parts hereinafter described and particularly pointed out in the claims.

One form of my invention is illustrated in the accompanying drawings, wherein Figure 1 is a fragmentary vertical sectional view taken transversely of the platen and platen carriage of a No. 10 Remington typewriting machine embodying my invention. Fig. 2 is a plan view showing the right-hand end portion of said platen and platen carriage. Figs. 3 and 4 are operating views of the fractional line spacing mechanism. Figs. 5, 6, 7 and 8 are detail views of difierent novel parts.

As appears from Fig. 1, uprights or posts 1 support a top plate 2 in the said Remington No. 10 machine. The carriage is composed of a platen frame 3 detachably and shiftably supported on a rectangular truck comprising front and rear bars 4 and and connecting end bars 6. Said carriage is adapted to travel on roller bearings 7 and provides a support for the usual rotative platen 8, said platen being provided with an axle 9 and being arranged parallel with the front and rear bars 4 and 5 of the truck and near the rear bar, there being a considerable space between the platen and the front bar 4. At the right end of the platen the usual line spacing ratchet wheel 10 is connected thereto, said wheel being adapted to be turned step-by-step by a driving pawl 11 comprised in the regular line spacing mechanism which is mounted on the platen carriage. Said pawl is pivotally mount'ed'at 12 upon an arm 13 adapted to swing concentrically with the axis 9 of the platen. To said pawl is pivotally connected a link or bar 14 whose opposite end is pivotally connected to one arm of a bell crank 15 pivoted at 16 in a lug on the carriage truck. To the other arm of the bell crank 15 is pivotally attached the lower end of a link 17 whose upper end is pivotally connected at 18 to a short crank arm 19 secured by a screw 20 to the rear end of a rock shaft 21 arranged to oscillate in a tubular bearing 22 mounted on. the carriage. Said rock shaft extends forward beyond its bearing and is formed with a downwardly projecting hand piece 23 by which the line spacing pawl 11 is operated through the connections hereinbefore described to rotate the platen 8 step-by-step, said platen being adapted to be turned by the pawl 11 either one, two or three notches of the line spacing ratchet wheel 10, according to the adjustment of the usual regulator (not shown). The platen is held against accidental rotation and maintained securely in working position by detent devices which. in the present instance, are controlled by a plurality of keys arranged at the front of the platen carrriage where they may be readily manipulated for the purpose of turning the platen either forward or backward at will through fractional line space distances. Said detent devices comprise a roller detent 24 which cooperates with the teeth of the ratchet wheel 10. Said roller detent, as most clearly appears in Fig. 5, is mounted on a spring pressed plunger 25 which slides in a way 26 formed in a block or supporting device 27. The plunger is provided with a screw shank 28 which bears in an opening at the upper end of the block 27. A. coiled spring 29 surrounds the shank 28 and presses the plunger and the roller 24 downward. The roller itself is guided in a slot or kerf 30 in the bottom of the block 27. Then the roller 24 and the ratchet are separated, as in assembling anddisassembling, the head of the shank 28, contacting with the top of the block, prevents displacement of the roller 24 and plunger 25 from the block. The block 27 is rigidly secured to the outer end of an arm 31 that is pivotally mounted on a platen axle 9, the result being that the block is mounted to swing concentrically with the platen. To control the position or movements of the block, devices are provided head provided at 'lS pivotally connected at 32 'a screw pivot 41 comprising an arm 32, the rear end of which with the arm 31 and block 27. The arm 32 zontally forward and is bifurcated at its forward end, providing portions or fingers 33 which are parallel and horizontal, and toothed or provided at their inner opposite faces with rack teeth 34 and 35. The bifurcated forward end of the arm 32 is guided in a vertical slot-way 36 formed in an angular guide bracket 37 that is secured by screws 38 to the front bar 4 of the carriage truck. 7

Arranged side by side in the slot-way 36 and between the toothed portions 83 are gear members or levers '39 and 40 which are shown detached in Figs.6 and 7, these-mem bers or,levers being p ivotally supported on which bridges the slot'and is held in place by a nut 42. The member 39, which is arranged at the right of and contiguous to the member 40 has a circular series ofgear teeth 43 whichmesh with the rack teeth 34; while the member 40 has a similar circular head provided at its lower side with gear teeth 44 which mesh with the rack teeth 35. The. member or lever 39 is provided with a forward extension or arm 45 which terminates in a key or finger button 46, while the member or lever 40 has a forward extension or arm'47 provided with a key 48. Cotiperative with the under side of the extensions 45 and 47 is the head 49 of a vertically arranged spring plunger 50 which, as clearly shown in Figs. 1 and 8, is seated in a depression 51 in a block 52 secured by screws 53 to the front of the bracket 37. A coiled spring 54 is housed in the depression 51 and surrounds the plunger 50, the head of which contacting with the extensions 45 and 47 maintains them normally horizontal and in the position shown in Fig. l.

It will be observed that the members or key levers 39 and 40 are adapted to act oppositely on the arm 32 to move it lengthwise to and fro; and the construction is such that the plunger 50 maintains theextensions 45 and47 and the parts controlled thereby in equilibrium. If the operator depresses the finger piece 46, as shown in Fig. 3, the spring plunger 50 will be forced downward and the teeth 43 and 34 will cotiperateto draw the arm 32 forward. This forward movement of the arm 32 acts to swing the arm 31 forward, causing the detent roll 24, acting on the ratchet wheel 10, to turn the platen backward in the direction of the arrow in Fig. 3.. The'parts are so proportioned and adjusted that when the limit of movement is reached, as determined by the contact of the platen will have been turned an'angular disextends hori-:

its upper surface with a stop pm 55 a and b in Fig. 3 andindicated by the refer ence character 0. Prior to 'th'eturning movement aforesaid, the writing or printing line was wherethe dotted line a intersects the surface of'the platen; and as a result of the turning movement the writing will now. take place where the dotted line b intersects. the surface of the platen which 'is a fractional line space distance above the regular writing line 64. Consequently exponents or other characters may be written a, fractional line spacing distance above the regular line of writing, these characters beingtermed superscripts. If a .considerable number of thesesuperscripts are to be written, the platen may be-locked in theabnormal position shown inFig. 3 by devices comprising 7 a hook or latch 55 pivoted onthe screw pivot 41 outside the bracket '37. 'Said hook is provided with a finger piece 56 by which it may be swung rearward and downward' from the normal position, indicated in Fig. 2 andin full lines in Fig. 3, where it rests against a Fig. 3 shows'bydotted lines the hook operatively engaged with a pin'57 7 projecting laterally from the arm 32, the

hook thereby preventing the return of the arm 32 and connected-parts to normal, position. Unless the hook or latch 55 is used, the platen will remain in abnormal position only so long as the key 46 is maintained depressed by the operator. It will be observed that when the key 46 is being depressed the key 48 rises idly, due to the fact that the rack 35, moving forward, acts on the teeth 1 44, swinging the extension 47 upward. WVhen the operator releases the key 46 the plunger 50 will rise, forcing the'extension 45 upward andthe arm 32 rearward and re: storing the platen, throughthe action of the detent24 on the ratchet wheel 10. The up:

ward movement of the extension 45 will con-j tinueuntil the plunger 50 is engaged by the descending extension 47 which will be when the extensions 45 and 47 are'about horizontal, as in Fig. 1. Thus the opposing actions of the members 39 and 40 are balanced, and the arm 32 controlled by said members is. maintained in equilibrium, as is also the support-V ing member 27 and detent 24.v hen the key 48 is depressed, swinging the member 40 downward, the reverse action takes place, that is, the arm 32 is moved rearward through the action. of the gear teeth 441on the'rack teeth. 35 and the member 39 rises idly. The rearward movement of the arm 32, acting on the block or the arm31. Consequentlythe detent 24'is swung rearward, and actingon the teeth of o tie ratchet wheel 10, causes theplatenS to 7 turn througha fractional line distance the direction ofthe: arrow in Fig. 4;" The Y distance throughwhich the platen is turned whereby said line spacing is indicated by the reference character (1 and is the distance between the dotted lines a and e, a representing the normal or original writing or printing line and e the abnormal printing line below the line a. The result is that if the key 48 be held depressed either by the finger of the operator (or by turning the hook 555 forward as shown by dotted lines in Fig. 4 to act against the forward side of the pin 57), the characters printed through operation of the usual type bars will be in the nature of subscripts written below the line a. On releasing the key 48 the member 40 will swing upward until the head 49 of the plunger 50 meets the olescending member 39 when the part-s will be arrested and held in equilibrium in the normal position shown in Fig. 1.

Preferably the keys 46 and 48 are provided with suitable indicating marks, as in Fig. 2, where the key 46 is marked Sup which stands for superscript, and the key 48 is marked Sub for subscript.

It will be seen that by my present invention I have provided a simple auxiliary line shifting mechanism operative independently of the regular line spacing mechanism; that this auxiliary mechanism is conveniently controlled by a plurality of keys arranged at and operative from the front of the platen carriage; that one of these keys, when actuated, operates to shift the line of print or writing a predetermined distance above the normal line, while the other key shifts the line of print a predetermined distance below the normal line; and that these shiftings are effected through 'a detent device which cooperates with the usual ratchet wheel, said detent device, its support and the connections to the keys being maintained in equilibrium in a central position by spring means and movable from said position in either of two directions.

Various changes may be made without departing from the spirit of my invention.

What I claim as new and desire to secure by Letters Patent, is

1. In a typewriting machine, the combination with a platen carriage, a platen and a line spacing wheel connected thereto, of line spacing mechanism, a detent, and devices controlled by a plurality of keys for bodily moving said detent in two directions whereby said line spacing wheel and platen may be turned a fractional line space distance either forward or backward at will.

2. In a typewriting machine, the combination with a platen carriage,- a platen and a line spacing wheel connected thereto, of line spacing mechanism, a detent cooperative with said wheel, and devices controlled by a plurality of keys for moving said detent bodily at will in either of two directions wheel and platen may be turned a fractional line space distance either forward or backward, one key operating to turn the platen forward and the other key to turn it backward.

3. In a typewriting machine, the combination with a platen carriage, a platen and its line spacing wheel, of a detent cooperating with said wheel, a support on which said detent is mounted, and devices controlled by a plurality of keys at the front of the carriage for at will moving said support in either of two directions.

4. In a typewriting machine, the combination with a platen and its line spacing wheel, of a detent, a support on which said detent is yieldingly mounted, a plurality of keys, and connections between said keys and said support, each of said keys being operative to bodily move said support and turn said platen.

5. In a typewriting machine, the combination with a carriage, a platen and its line spacing wheel, of a detent, a swinging support therefor mounted concentrically with said platen, a key lever at the front of the carriage, and connections between said key lever and said support including a bar extending rearward from said key lever and pivotally connected to said support whereby said key lever is operated to swing said sup port about the axis of the platen as a center, the movement of said support acting through said detent to turn said platen on its aXis.

6. In a typewriting machine, the combination with a platen and its line spacing wheel,

of a detent, a swinging support therefor mounted concentrically with said platen, a plurality of keys, and connections between said keys and said swinging support, each of said keys being operative to swing said support and said detent and simultaneously to turn said platen, the movement of the platen and the support being co-aXial.

7. In a typewriting machine, the combination with a platen and its line spacing wheel, of detent, a swinging support mounted coaxially with the platen, a member connected to said support, and a plurality of keys connected to said member and each operative to swing said support and turn said platen coaxially therewith, said member being oppositely movable by said keys.

8. In a typewriting machine, the combination with a platen and its line spacing wheel, of a detent, a support for said detent, a plurality of keys, and connections between said keys and said support, each of said keys being operative to bodily move said support and turn said platen, said connections comprising an arm pivotally connected to said support and provided with oppositely disposed racks.

9. In a typewriting machine, the combination with a platen and its line spacing v wheel, of a detent, a support for said detent,

a plurality of keys, and connections between said keys and said support, each of said keys being operative to bodily move said support and turn said platen, said connections comprising an arm pivotally connected to said support and provided with oppositely disposed racks, and members on which said keys are supported, said members being provided with gear teeth intermeshing with said racks.

10. In a typewriting machine, the combination with a platen and its line spacing wheel, of a detent, a support for said detent, aplurality of keys, and connections between said keys and said support, each of said keys being operative to bodily move said support and turn said platen, said connections comprising pivotally supported members provided with gear teeth, said keys being mounted on said members.

11. In a typewriting machine, the combination with a plate and its line spacing wheel, of a detent, a support for said detent, a plurality of keys, and connections between said keys and said support, each of said keys being operative to bodily move said support and turn said platen, said connections comprising a member pivotally connected to said support and oppositely movable by said keys.

12. In atypewriting machlne, the combination with a platen and its line spacing wheel, of a detent, a support for said detent,

a plurality ofkeys, and connections between said keys and said support, each of said keys being operative to bodily move said support and turn said platen, said connections comprising an arm pivotally connected to said support and provided with bifurcated toothed portions, and devices connected to said keys and cooperatingwith said toothed portions to move said arm in opposite directions. 7

13. In a typewriting machine, the combination with a platen carriage, a platen and its line spacing wheel, of a detent, a support for said detent, a plurality of keys,and connections between said keys and said support,

each of said keys being operative to bodily move said support and turn said platen, sa1d connections comprlsmg an arm pivotally conected to said support and provided 7 with toothed portions, and pivotally mounted toothed members to which said keys are fixed, said members cooperating with said toothed portions to move said arm in opposite directions.

1a. In a typewriting machine, the combination of a platen, detent means, means for moving said detent means either forwardly or backwardly at will, said last mentioned means comprising two key-operated devices that are separately operative at different times, one device to move the detent in one direction and the other device to move the detent in the opposite direction, said two devices being simultaneously movable in opposite directions at either movement of said moving means, and meansfor maintaining said oppositely movable devices in equilibrium.

15. In a typewriting machine, the combination of a platen, detent devices normally operating to maintain the platen in set positions, a plurality of keys operative on said devices to move the platen oppositely at will, and means formaintaining said devices in equilibrium.

16. In 'a typewriting machine, the combination with a wheel, of a yielding detent normally engaged with said-line spacing wheel, a support therefor, spring means, and devices connected to said support and controlled by said spring platen and its line spacing means for maintaining said support in equilibriumso that said detent may'yield to permit movement of said line spacing wheel in, either direction. V

17. In a typewriting machine, the combination with a platen and its line spacing wheel, of a detent, a support therefor, a plurality of key levers connected to said sup port, and spring means operative on said key levers for maintaining said support in equilibrium. V

18. In a typewriting machine, the combination with a platen and its line spacing wheel, of a detent, a support therefor, a plurality of key levers connected to said support, and a spring plunger operative on said key levers to maintain said support in equilibrium. V

19. In a typewriting machine, the combination with a platen and itsrline spacing wheel, of a detent, an oppositely movable member connected'thereto, keys connected to said member, and spring means for main, taining said member in equilibrium.

20. In a typewriting machine, the combination with a platen and its line spacing Wheel, of a detent, an oppositely movable member connected thereto, keys connected to said member, and spring means for maintaining said member in equilibrium, said keys being operative to move saidmember in opposite directions.

21. In a typewriting machine, the combination with a platen carriage, a platen and its line spacing wheel, of a supporting block, a spring pressed detent mounted on'said block and cooperative with said line spacing wheel, an arm pivotally connected to said block and provided with oppositely toothed portions, a plurality of toothed key levers,

each key lever cooperating'with one of said I block and cooperative with said line spacing support, each of said keys being operative wheel, an arm pivotally connected to said to bodily move said support and turn said block and provided with oppositely toothed platen to an abnormal position, and latching portions, a bracket on said carriage, a pludevices operative to maintain said platen in rality of toothed key levers pivoted to said abnormal position to which it may be bracketand each engaging with one of said turned.

toothed portions, and spring means opera- 25. In a typewriting machine, the combitive on said key levers. nation of a platen, a ratchet wheel, a detent,

23. In a typewriting machine, the coinbia swinging carrier therefor, a key lever pronation with a platen and its line spacing vided with teeth, and an arm intermediate wheel, of a detent, a support therefor, a the swinging carrier and the key lever pivotplurality of key levers connected to said supally connected to the carrier at its rear end port, a spring plunger operative on said key and at its Iorward end having a rack in enlevers to maintain said support in equilibgagement with the teeth on said key lever.

rium, and locking devices operative to main- Signed at the borough of Manhattan, city tain said detent in abnormal position after of New York, in the county of New York actuation by either of said key levers. and State of New York, this 19th day of 24. In a typewriting machine, the coinbi- August, A. D. 1912.

nation with a platen and its line spacing CLIO B. YAW.

wheel, of a detent, a support on which said \Vitnesses:

detent is spring mounted, a plurality of E. M. WELLS,

keys, connections between said keys and said CHARLES E. SMITH.

fiopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. G. 

